FIGURE LEGENDS:
Figure 1. Process of study selection.
Figure 2. Risk of bias of the eligible studies.
Figure 3. Pooled RRs and 95% CIs for overall hospital admissions in ED studies.
Figure 4. Pooled MDs and 95% CIs for LOS in hospital studies
Figure 5.a. Pooled MDs and 95% CI in the difference for acute asthma severity score in ED studies (mean differences).
Figure 5.b. Pooled SMD and SMD95% CI for acute asthma severity score in ED studies (mean after intervention).
Figure 5.c. Pooled SMD and SMD95% CI for acute asthma severity score in ED studies according by budesonide doses.